From 5d88457eb5b86b475422dc882f089203faaeedb5 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 3 Jan 2015 05:39:35 -0600 Subject: mnt: On an unmount propagate clearing of MNT_LOCKED A prerequisite of calling umount_tree is that the point where the tree is mounted at is valid to unmount. If we are propagating the effect of the unmount clear MNT_LOCKED in every instance where the same filesystem is mounted on the same mountpoint in the mount tree, as we know (by virtue of the fact that umount_tree was called) that it is safe to reveal what is at that mountpoint. Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" --- fs/pnode.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/pnode.h') diff --git a/fs/pnode.h b/fs/pnode.h index aa6d65df7204..af47d4bd7b31 100644 --- a/fs/pnode.h +++ b/fs/pnode.h @@ -42,6 +42,7 @@ int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, struct hlist_head *); int propagate_umount(struct list_head *); int propagate_mount_busy(struct mount *, int); +void propagate_mount_unlock(struct mount *); void mnt_release_group_id(struct mount *); int get_dominating_id(struct mount *mnt, const struct path *root); unsigned int mnt_get_count(struct mount *mnt); -- cgit